Pipe-coupling.



Patented May 30, 1916.

G. BEST.

PIPE COUPLING.

APPLICATION FILED mac. n, 1912. RENEWED OCT. 27. I9l5.

LVN names w. mzzw L AM THE COLUMBIA PLANOGRAPH co.. \VASHINGTON, D. c.

GEORGE BEST, OF OAKMONT, PENNSYLVANIA.

PIPE-COUPLING.

Application filed December 11, 1912, Serial No. 736,116.

To all whom it may concern:

Be it known that I, GEORGE Bnsr, a citizen of the United States, andresident of Oakmont, in the county of Allegheny and State ofPennsylvania, have invented a new and useful Improvement inPipe-Couplings; and I do hereby declare the following to be a full,clear, and exact description thereof.

My invention relates to pipe couplings for use in gas, oil, water,steam, air and other lines.

The object of my invention is to provide a strong and eflicient form ofpipe coupling in which the pipe sections are securely united together toform a tight and leakage proof joint, the couplings being made withoutthe use of any particular tools and without the use of bolts or nuts. Tothese ends my invention comprises the novel features hereinafter setforth and claimed.

In the drawing, Figure 1 is a longitudinal section of a portion of pipesection showing my invention applied thereto; Fig. 2 is a section on theline 22 Fig. 1 looking in the direction of the arrows; Fig. 3 is asection on the line 33 Fig. 1; Figs. 4: and 5 are views of the clips.

In the drawing the numerals 2 and 3 designate the end portions of thepipes to be united by my improved couplings and the ends of said pipesare bent outwardly to form the flange portions 4. The end of the pipe ispreferably bent back on a curve so as to form the annular recesses 5.The

clamp 6 has the inwardly projecting bottom flange 7 which is adapted tofit within the recesses 5 and said flange forms with the body of theclamp the recess 8 to receive the bent end portion 4 of the pipe. Theclamp 6 is further provided with the overlapping portion 9 which has itsinner face 10 inclined or tapering, as shown in Fig. 3.

The clamp 11 has the bottom flange 12 which is adapted to engage theseat 5 in the other section of pipe, and the recess 13 to receive theoutwardly bent portion 4 of said pipe. The upper end of the clamp 11 hasthe inclined or tapering rib 14: as shown in Fig. 5, which is adapted toengage the inclined face 10 of the clamp 6. The outer inside face of theclamp 11 has the rib 11 which is adapted to engage the inner face 6 ofthe clamp 6.

Tu assembling the parts the pipe sections Specification of LettersPatent.

Patented May 36 1916. Renewed October 27, 1915. Serial No. 58,301.

2 and 3 are adjusted with their ends adjacent to each other, and thegasket 15 of suitable material is interposed between the ends of saidpipe. The clamps 6 and 11 are then adjusted into position by bringingtheir flanges 7 and 12 into engagement with the seats 5 of the pipesections and said clamps are then moved circumferentially to bring theoverlapping portion 9 of one member with its inclined face 10 intoengagement with the inclined face 14 of the other member, as shown inFig. 2. Any suitable number of clamps may be employed which will permitof their being adjusted in this manner and when the full number ofclamps have been positioned as described they are finally fixed or setby a hammer or other instrument which drives the clamping members intolocking position by forcing the in clined faces of the clamping membersover each other. This action will tend to draw the ends of the pipestoward each other, and the gasket 15 interposed between the ends of saidpipe sections will be compressed and a tight joint obtained. i

By having the rib 14 located below the extreme upper end of the clamp 11and engaging the extreme lower end of the downwardly extendingoverlapping portion 9, while the rib 11'" engages the inner face of theclamp 6 above the point where the rib 14 engages the overlapping portion9, the inwardly projecting flanges 7 and 12 are forced into the annularrecesses 5 and the ends of the pipe drawn together to compress thegasket and give a tight joint. This effeet is further increased byhaving the midline of the gasket to one side of the point where the rib11 engages the inner face of the clamp 6.

By the use of a number of independent.

clamping members, the engagement of each pair of clamping members, withwhich there is always insured an even pressure on the gasket, isobtained so that the joint is just as tight at one point as another.Furthermore in case one pair of clamps is not doing the proper work orneeds replacing, this can be readily accomplished without removing anyof the other clamps.

The coupling can be made out in the field without the use of anyparticular form of tool, and no bolts or nuts are required. The onlyinstrument required is a hammer or something to bring the members :into

, locking position after they have been adj usted in place.

WhatI claim is: In a pipe coupling, the combination of the pipe sectionswith outwardly turned ends, of a series of independent clamping membersengaging said ends, one of said clamping members overlapping the other,the overlapped member having an inclined rib engaging the inner face ofthe outer end of the overlapping portion of the" other Copies of thispatent may be obtained. for

GEORGE BEST.

Witnesses:

ROBERT C. TOT'lEN, 7 JOHN F. WILL.

five cents each, by addressing the, Commissioner of Patents. Washington,D. G.

